Strength Failure of a Natural Gas Station Pipe System under Foundation Settlement and Countermeasures

The foundation settlement is one of the potential hazards that causes stress concentration in natural gas station pipes and their bending deformation.This paper deals with the on-site foundation settlement of a natural gas station.A set of three-level early warning schemes was proposed for the foundation settlement in the natural gas station.In addition, a countermeasure method was also proposed.Results show that the stress is concentrated at the bend of the gate-shaped pipe and the connection between the gate-shaped pipe and the main pipe.The gate-shaped pipe exhibits inclined deformation.The method of installing a concrete floor under the pipe can effectively reduce stress concentration at the connection between the gate-shaped pipe and the main pipe.If pipe piers are used for support, the stress and displacement of the pipe can be reduced to a certain extent, but the impact is limited, and the effect is slightly better when both ends and the middle of the pipe are supported.